On Mon, 2003-01-13 at 20:46, Alan Cox wrote:
> > host shall wait 400 ns before reading the Status register. When entering
> > this state from the HPIOI2 state, the host shall wait one PIO transfer
> > cycle time before reading the Status register. The wait may be
> > accomplished by reading the Alternate Status register and ignoring the
> > result.
>
> Fatal on PIIX PIO
Ok, but PIIX runs on intel platforms with real IOs, so there is no need
to perform a read... If we go the hwif->IOSYNC() way, we might well set
it up to no-op on x86 PIO iops by default and read of alt-status on
other archs if it's safe enough on other controllers/drives...
Ben.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Jan 15 2003 - 22:00:51 EST